Stop motion



Feb. 15, 1955 B s AL 2,701,946

STOP MOTION Filed Sept. 20, 1952 SSheets-Sheet l JESSE L. 5210655 63- and 67 HILLARY L. SULLIVAN, INVENTORS.

* ATTORNEYS.

Feb. 15, 1955 J. BRIDGES ET AL 2,701,946

STOP MOTION Filed Sept. 20, 1952 3 Sheets-Sheet 2 Jzsss L. bmoass and HILLARY L. Sumvmv, INVENTORS.

BY ZJWM ATTORNEYS.

STOP MOTION 3 Sheets-Sheet 3 Filed Sept. 20, 1952 JESSE L. BRIDGES and HILLARY L. Sumvnu,

INVENTORS.

ATTORNEYS.

2,701,946 V V s and is usually supported on a plurality of vertical frame members including Samsons 11, only one of which is shown in the drawings, and this particular Samson 11 is usually termed as the third Samson. It is well known to those familiar with the art that roving machines and the like also include a head end and a foot end. The head end and the foot end and those Samsons other than the third Samson are not shown, since the present invention is disposed adiacent the third Samson and a disclosure of the remaining frame members of the machine is deemed unnecessary.

Upper and lower cones or cone pulleys 12 and 13 are usual arts of a roving machine and are connected bv an endless belt 14. a A longitudinally traveling rack 15 is pr vided with a fork 16 which embraces the belt 14 so that. as the rack 15 is moved, the belt 14 is caused to travel l itudinally of the cones t vary the speed of the spindles in the usual manner. The spindles, onlv two of hich are sh wn in Fi ure 2. are indic ted at 20 and each has a c nventi nal flyer 21 removablv se ured on the up er e there f. one f the legs f which has a pres er f t 22 c nnected th reto for directing yarn or r ving Y fr m the usua drawin r lls. n t sh wn, throu h the c rresp nding le f he fiver 21 and he es er f ot 22 to a c rrespond n b bbin or yarn holder 23 d te to be mou e n a b er 24.

As i ell kn n. he b lsters 24 are driven to r tate at a sl wer s eed th b in the s me dir cti n as. the corresp n i g spindles 20 and said bolsters 2 with the bobbins 23 thereon are caused to m ve verticallv relative to the spindles 20 by means of a c nventional builder moti n. not sh wn. The b lsters 24 are supported f r r tation on a b lster or bo bin rail 25 carried bv a verticallv movable frame 26. The verti llv movable frame 26 has conventional lifter-racks 27 (Fi ure 1) for ed thereon. onlv one of which is shown in Figure 1 dis ed l sely ad 'ent the Sam on 11.

Ea h of the lifter-ra ks 27 is en a ed by a corresponding pini n or e r 30 fixed n a conventional rock-shaft or lifting shaft 31 iournaled in the Samson 11 and being driven to osci late in the usual manner. Means f r driving the rockhaft or liftin haft 31 are disc osed in such patent as h e numbered 6 .874 and 2.452.273. Also, c m lete details f a r ving frame and the driving means there r re dis ed in a cat l ue of parts of Sam- Lo e l Sh os entitled M del D C trolled Draft Roving Frames and a disclosure of said driving means is dee ed unnecess ry.

M unted to slide in ne or more uides 33. secured to the frame of the m chine. is a shipper r d 34. As is well kn wn. the shi er rod 34 is connected at its end to a shipp r lever (not sh wn) bv means of hich the usual driving be t is passed fr m the loose ulley t he fast pulle a vice versa. A tappet or abutment 35 is fixed on the shipper rod 34 and is adapted to be en a ed bv the upper end of a sw g lever or kn ckff le er 36 ful rumed upon a st d 3 carried by a bracket 40 suitab secured to the beam 10.

The swin le er 36 is us llv f rmed in two arts adjustabl secured i oel'hel. the lower part having a l teral arm 41 on whi h a wei ht em 42 is adiusta lv Secured. T e wei ht member 42 is sufiicient to force the shi per r d 3 lonvitndinallv n to thr w the Usual drivin belt ot hown) fr m the f t to the l se pullev.

One end of a conventi nal l ch a m 3 is nivotallv c nne ed t the low r end of the swin lever 36. as at '44. and is thus c use to m ve in one directi n by the wei ht member 42. The other or free end of the conventional latch arm 43 proiects throu h an aperture 45a (Fi ure 5) in a stop plate or bracket 45 suitably secured to the Samson 11. The latch arm 43 has a notch 46 in its lower surface adiacent the free end thereof and, when the machine is in operation, the notch 46 engages the plate 45, as shown in Figures 6 and 7, to prevent the lever 36 from being operated by the weight member 42 and shifting the shipper rod 34 and, consequently, to effect an automatic stopping of the machine.

The cone-rack 15 has a tappet or abutment 47 adiustably secured thereon which engages the latch arm 43 when the cone-rack 15 reaches the end of its movement from left to right in Figure 4. When the tappet or abutment 47 engages the latch arm 43, it raises the notch 46 out of engagement with said plate 45, whereupon the swing lever 36 is enabled to shift the shipper rod 34 to stop the machine. The parts heretofore described are the usual parts of a roving frame or the like, and it is with these parts that the invention is adapted to be associated.

As heretofore stated, the rock-shaft or lifting-shaft 31 moves in one direction, say, a clockwise direction in Figures 2, 3, and 8, as the bolster rail 25 and the bobbins 23 move upwardly relative to the machine frame and the spindles 20. Of course, as the rock-shaft or lifting shaft 31 moves in the opposite or counter-clockwise direction in Figures 2, 3, and 8, the bolster rail 25 and the bob bins 23 move downwardly relative to the spindles 20. As is well known, the amount that the rock-shaft 31 is rotated and the coincident length of stroke of the bolster rail 25 is varied, according to the amount of yarn or roving wound about each of the bobbins 23, by the usual builder motion (not shown).

Accordingly, it is practically impossible to position the tappet or abutment 47 on the cone-rack 15 so that it will engage and release the latch arm 43 at the same time preparatory to each doffing operation, that is, upon the bobbins 23 being filled with yarn or roving. In order to facilitate removal of the fiyers 21 from the spindles 20 during the d fling operation. with ut entangling adjacent turns of roving on the bobbins 23 and to prevent the roving from becoming unravelled as the fiyers 21 are removed from the spindles 20, it is preferable that the bobbins stop in the course of a downward stroke of the bolster rail 25 and in such a position that the presser feet 22 are disposed at a point slightly below midway of the length of each package of yarn or roving formed on the bobbins 23. This relativity in the positions of the presser feet 22 on the flyers 21 and the bobbins 23 shall hereinafter be termed as the optimum dofling position (Figure 3).

Now, in order to stop the bobbins at said optimum doffing position, upon the desired amount of yarn or roving Y being wound. about the b bbins 23, there is provided an improved stop-motion which operates in conjunction with the conventional stop motion embodied in the latch 43, the abutment 47 on the cone-rack 15 and the swing lever 30. Broadly. the im r ved or auxiliary stop-motion comprises an auxiliary latch or a movable restraining means with cam controlled means, operating in timed relation to the vertical reciorocat ry m vement of the bolster rail 25 and the bobbins 23, to intermittentlv move said auxiliarv latch out of en a ement with an abutment or notch in the latch arm 43 of the c nventional stop-motion so that. u on said c nventional latch arm being rele sed fr m its c nventi nal restraining means. as embod d in the plate 45. the subsecluent movement of the auxiliarv latch out of enga ement with the cor esp nding abutment or un h in the conv ntional l h arm will re ease said la ch arm to stop the machine simultan usly w h the rel ive p sition of the bobbins and the flvers bein such th t the presser feet on the flvers o cupy the optimum d ffing position.

The auYiliarv st p-moti n compri es a vertic lly m vable auwiliarv lat h 50 which is preferablv I.- h d and is supported on the u per end of a VertiCallV disno ed and verticallv m vable rod or shaft 51. T fhiq i stance. the auxiliarv latch 50 is nivotallv connected to the unner end of the verti l rod 51 by means of a pin 52 which roav be positi ned in anv one f a nluralitv f apertures 53 in the upper end of the rod 51 for adjustment purp ses.

The auxi iary latch 50 is al pi tallv supported. as at 54, by the Samson 11. in this instance. the plate 45 is f rmed with bifurcat ns 56 between which one end of the latch 50 is positioned and pivotallv su ported. The conventi nal latch arm 43 is provided with a second notch 57 in the upper ed e thereof which is adapted to be intermittently engaged by the free end of the auxiliary latch 50 when the notch 46 is in enga ement with plate 45. Thus, the left-hand wall of the notch 57 (Figure 4) serves as an abutment on the cronventional latch arm 43 for engaging the auxiliary latch 50.

It is evident that, when the auxiliary latch 50 is in engagement with the notch 57 in the conventional latch arm 43 and the conventional latch arm 43 is released from the plate 45, the auxiliary latch or movable restraining means 50 prevents the latch arm 43 from moving left to right, in which direction said conventional latch arm 43 is normally urged by the weight member 42. Thus, this will new . deiaytliegs't'opping'rof -the flaehine until" the bobbins 2 3 he reached theoptimumdbfiingiposition relative to the waster. feet-22', at-which. time the auxiliary latch or restraining-means50 moves out of engagement with the nptch 57toreleasethe conventional latch arm 43 and stop themachi'ne. 4

Therod'51 is mountedfor v'ertica'l movement in a guide blbcl-60f suitably secured to the Samson 11, The lower end of-{therod 51 has a transverse follower plate'or tappet 62 suitably secured thereto, which is intermittently engaged by an" auxiliary c'a'm' element or tumbler 63 pivqrauy suppdneaas 9164,. on aneccentri'c cam element 65 fixed on-the rock-shaft of lifting shaft 31. The auxiliary lemenrier tumbler '63' is; in the form of a segment of a-d' thusidefininga curved outer" surface 63a and conv'ergingfangiilar'surfaces631i and 63c- (Figure 8)..

It will beriote'd that the angular'surface' 63a is substantia'llylbiigerthan the surface 63band the tumbler or auxilia'ry'element 63 is pivo'tally connected to the eccentric cam 65 in off-center relation relative to the normal center of-gravity ot the: tumbler or auxiliary cam: element 63. When the eccentric portion of the eccentric" cam 65 is positioned to'the left of the vertical plane axis of the shaft 31 substantially as shown in solid lines in Figure 8, the surface 631" o'f'tlie turnbl'eror auxiliary cam element 6:3 engagesfan-atrutrnent'orstop pin 66 projecting laterally from the fac'eof the eccentric cam 65, against which the auxiliary carnele'rrie'nt ortumb1er'63' is mounted, so that the follower engaging or'point 63d of the tumbler63' will miss the follower plate 62 as it moves thereby in a clockwise direction in Figures 2 and 8, although the latch 50 may be in engagement with the second notch 57 in the conventional latch arm 43.

However, as the eccentric cam 65 moves the center of gravity of the tumbler 63 beyond the vertical plane of the rock-shaft or lifting shaft 31, the tumbler 63 falls about its pivot point, causing the surface 63b to move into engagement with a second stop pin or abutment 67 also projecting laterally from the face of the eccentric cam 65, as shown in Figure 3, and in phantom lines in Figure 8.

Now, the second stop pin 67 is so positioned relative to the pivot point of the tumbler 63 that the high point or cam follower engaging end 63d of the tumbler 63 will then extend substantially further from the axis of the shaft 31 than does the curved surface 63a of the tumbler 63 when the surface 630 of the tumbler 63 is in engagement with the stop pin 66.

Thus, upon each counter-clockw se movement of the eccentric cam 65 with the shaft 31, and during which the bobbins 23 and the bolster rail 25 are caused to move downwardly, the high point or end 63d of the tumbler 63 engages and elevates the cam follower plate 62 and the rod 51 to thereby move the latch 50 out of engagement with the notch 57 in the conventional latch arm 43.

Now, since the tumbler 63 causes the latch 50 to move out of engagement with the notch 57 at precisely the same time upon each downward movement of the bobbins 23 and the bolster rail 25, it is thus seen that we have provided means whereby the relative positions of the bobbins and the flyers will be the same each time that the machine is stopped regardless of the time at which the abutment or tappet 47 on the cone-rack 16 releases the conventional latch arm 43 from the plate 45.

In the drawings and specification, there has been set forth a preferred embodiment of the invention and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.

We claim:

1. An improved stop motion for roving mach nes, slubbers, speeders and the like, said machines each having a vertically reciprocable rail, driven yarn holders carried by said rail, flyers for directing yarn to each of said yarn holders, a stop motion, a driven cone-rack and means carried by the cone-rack for actuating said stop motion; the combination of means to restrain operation of said stop motion upon actuation thereof by said means carried by the cone-rack, and means operable automatically upon said yarn holders reaching a predetermined position in the course of reciprocatory movement thereof relative to the flyers for releasing said stop motion from the restraining means to enable said stop motion to be effective in stopping the machine.

2. In a roving machine, slubber, speeder or the like 6. Having a reciprocatoryframe' for c'arryinghobliins; a" stop motion and means for'automatically actuating the stop motion to stop the machine upon the completion of a substantial number of' revolutions by" the bobbins; the combination therewith ofa restraining; means normally restraining operation of the stop motion upon actuation thereof, and means operable automatically upon said reciprocat'ory. frame approaching a predetermined position relative to the-machine, and following" actuation of the stop motion, for releasing the stop motion" fromthe restraining means'to stop the machine. I,

3. In a rovingmachine,- slubber, speeder or the like having a vertically reciprocable frame forcarryingbobfbins, a first stop motion and means for automatically actuating the'first s'topmotion to stop the machine" upon the completion ofa substantialnumber of revolutions: by the bobbins; the combination of an auxiliary; stop' motion having means to restrain operation of the first stop motion upon initial actuationof the first stop motion, and means operable automatically upon" said reciprocable frame approaching a predetermined position relative to the machine and following actuation of the first stop motion for releasing the first stop motion from the restraining means of the auxiliary stop motionto, then,. stop the machine.

4. In a strand processing machine. such as a roving machine, slubber, speeder or the" like having a' vertically reciprocatory frame, rotarybobbins carried bysaid frame, a flyer associated with' each of said bobbins for directing strand material to the bobbins, a stop motion, said stop motion including a latch arm normally biased in one direction, normal restraining means engaging said latch arm, and means-on the machine for automatically releasing said latch arm from the normal restraining means upon a predetermined amount of strand material being wound on the bobbins; the combination of a movable auxiliary restraining means also normally restraining said latch arm upon said latch arm being released from the normal restraining means, and means operable automatically upon movement of the vertically reciprocatory frame in a predetermined direction for releasing the latch arm from the auxiliary restraining means to stop the machine.

5. In a strand processing machine such as a roving machine, slubber, speeder or the like having a vertically reciprocable frame, bobbins carried by said vertically re ciprocable frame, a flyer associated with each of said bobbins for directing strands to the bobbins, a stop motion, normal restraining means normally maintaining the stop motion in inactive position and means carried by the machine for automatically releasing said stop motion from the normal restraining means upon a predetermined amount of strand material being wound about the bobbins; the combination of an auxiliary restraining means restraining said stop motion in running position upon said stop motion being released from the normal restraining means, and means operable automatically upon movement of the vertically reciprocable frame in a predetermined direction for releasing the stop motion from the auxiliary restraining means to stop the machine.

6. In a strand processing machine such as a roving machine, slubber, speeder or the like having a vertically reciprocable frame, bobbins carried by said vertically reciprocable frame, a flyer associated with each of said bobbins for directing strands to the bobbins, a stop motion, normal restraining means normally maintaining the stop motion in inactive position and means carried by the machine for automatically releasing said stop motion from the normal restraining means upon a predetermined amount of strand material being wound about the bobbins; the combination of an auxiliary restraining means restraining said stop motion in running position upon said stop motion being released from the normal restraining means, means operable automatically upon movement of the vertically reciprocable frame in a predetermined direction for releasing the stop motion from the auxiliary restraining means to stop the machine, and means controlling the releasing of the stop motion from the auxiliary restraining means to cause the bobbins to cease vertical movement at a predetermined position relative to the corresponding flyers.

7. In a strand processing machine having a vertically reciprocable frame, rotary bobbins carried by said frame, a flyer associated with each of said bobbins for directing strand material to the bobbins, a rock-shaft movable in synchronism with said frame, a first stop motion ineluding an arm normally biased in one direction, normal means restraining movement of said arm and means operable automatically upon a predetermined amount of strand material being wound on the bobbins for releasing said arm from said normal means; the combination of an improved stop motion cooperating with said first stop motion and including an auxiliary restraining means,

means on said arm engageable with said auxiliary restraining means, cam means movable with said rockshaft, and means engageable with said cam means upon alternate movements of said rock-shaft to move said auxiliary restraining means away from said arm whereby, upon said arm being released from said normal means, said auxiliary means serves to restrain said arm until said cam means has subsequently moved said auxiliary means away from said arm to stop the machine.

' 8. In a yarn processing machine having a reciprocatory frame, rotary bobbins carried by said frame, a fiyer associated with each bobbin for directing strand material to said bobbins, a rock-shaft movable in synchronism with said frame, a first stop-motion having an arm normally biased in one direction, normal means normally restraining movement of said arm in said direction and means operable automatically upon said bobbins being filled with strand material for releasing said arm from said normal means; the combination of a latch spaced above said rock-shaft and disposed above said arm, an abutment on said arm normally disposed adjacent said latch, a vertical shaft depending from said latch, a first cam fixed on said rock-shaft, aneccentric auxiliary cam element eccentrically pivotally mounted on said first cam for movement about an axis parallel to said rock-shaft, and first and second laterally spaced stop means on said first cam and being disposed adjacent opposite sides of the pivot point of said auxiliary cam element whereby said auxiliary cam element alternately engages each of said stop means as the pivot point thereof is alternately moved to opposite sides of its center of gravity, said auxiliary cam element being so formed that it will miss the lower end of said vertical shaft while in engagement with said first stop means, but will engage and elevate said vertical shaft while in engagement with the second stop means to move said latch out of engagement with said abutment on said arm whereby, upon said arm first being released from said normal means, the auxiliary cam element, upon moving into engagement with said second stop means, will subsequently release said arm from the latch to permit the latch to be biased to machinestopping position.

References Cited in the file of this patent UNITED STATES PATENTS 894,860 Stickler Aug. 4, 1908 1,600,894 Laliberte Sept. 21, 1926 1,926,390 Kooistra Sept. 12, 1933 2,541,885 Neely Feb. 13, 1951 2,618,115 Sumner Nov. 18, 1952 

